On 14/12/2017 15:09, Carlos E. R. wrote:
Ah, this is what I thought. So the motherboard can address directly a block, not a word, on these devices. Once the block is addressed, I does something to transfer to RAM, either inside the disk or on the mother board. I suspect first to internal RAM, then this RAM is directly accessible from the motherboard, maybe via DMA. Unless there is a way to do a DMA transfer directly from the nand flash, emulating direct access to a position even if it is sequential. Some trick I can just imagine but not describe. Same as any disk where you have to read 512 bytes or one sector into memory to access one byte. Not sure but I think that some large disks have physical sectors of 4096 bytes. Dave P
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